QUERY PLAN
GroupAggregate (cost=807.71..808.97 rows=62 width=36)
Group Key: c.project_id
-> Sort (cost=807.71..807.87 rows=64 width=36)
Sort Key: c.project_id
-> Hash Right Join (cost=591.91..805.79 rows=64 width=36)
Hash Cond: (tbl_case_assignments.case_id = c.id)
-> HashAggregate (cost=217.55..323.95 rows=8512 width=36)
Group Key: tbl_case_assignments.case_id
-> Seq Scan on tbl_case_assignments (cost=0.00..174.70 rows=8570 width=12)
-> Hash (cost=373.56..373.56 rows=64 width=8)
-> Seq Scan on tbl_cases c (cost=0.00..373.56 rows=64 width=8)
Filter: (project_id = ANY ('{1018,4185,4184,4182,4183,4181,4174,4173,4179,4079}'::integer[]))